This thread may be helpful.
Im following that one closely. The guys already got GPS overlay working so that application will pretty soon become a must have for windows based carPCs.
My goal is to upgrade to a linux based (LinuxICE) carPC. One of the things I need is to have video with GPS overlay. I dont think that application will work under wine and I really have no interest on trying MONO.
I know everything needed is out there for linux, just need to figure out how to best combine the different tools to get the end result.